 When we browse the internet, we unknowingly reveal a lot about ourselves. Privacy and data protection are important issues for everyone surfing the net. However, there are ways of remaining incognito. One common option is Tor. Tor uses the principle of onion routing for anonymous communication over a computer network. With Tor, messages are encrypted in layers and pass through routers until they reach their final destination. The identity of the sender of the message remains hidden. Tor is the technology used to access online markets in the darknet. In these markets, goods and services are exchanged between parties who use digital encryption to hide their identities. When a purchase takes place, buyers and sellers use cryptocurrencies such as Bitcoin to remain anonymous. Darknet market goods include illicit drugs.